Chad Knaus on Jimmie Johnson winning 7 Sprint Cup crowns (video)


Jimmie Johnson won a record-tying seventh NASCAR Sprint Cup championship by capturing Sunday’s Ford EcoBoost 400 at Homestead-Miami Speedway — and crew chief Chad Knaus has been there every step of the way during those seven title runs.

After Johnson’s historic victory, Knaus spoke to NBC Sports about the journey to seven championships.